Hidden door hinge



FIG. 1 is a perspective view of a hidden door hinge showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is another perspective view in folded condtion thereof;

FIG. 9 is another front elevational view in separate condtion thereof; and,

FIG. 10 is another perspective view in separate condtion thereof. 

CLAIM The ornamental design for a hidden door hinge, as shown and described. 